The story has a number of variants, different people talking to a taxi driver, lift operator etc. The basic point is still valid though.
关于擦鞋男孩的这个故事有若干种不同版本，不同的人是在与出租车司机、电梯操作员等进行交谈时发现股市处于泡沫的，然而，其基本思路都是站得住脚的。
Operator Certificate such as lift Operator, Lifting Appliance Operator and Forklift Driver, etc.
工人上岗证，如电梯工、起重机械操作工及铲車司机等。
Special Appliance Operator Certificate such as lift Operator, Lifting Appliance Operator and Forklift Driver, Electrician and Welder, etc.
特种作业人员操作证，如电梯工，起重机械操作工，叉车司机，电工及焊接工等。
Special Appliance Operator Certificate such as Lift Operator, Lifting Appliance Operator and Forklift Driver, Electrician and Welder, etc.
特种作业人员操作证，如电梯工、起重机械操作工，叉车司机，电工及焊接工等。
Operator Certificate such as lift Operator, Lifting Appliance Operator and Forklift Driver, etc. License for Dangerous Chemical Warehouse Keeper, Electrician and Welder, etc.
工人上岗证，如电梯工、起重机械操作工及铲车司机等。危险化学品仓库管理员证，电工证及焊接工等。
Operator Certificate such as lift Operator, Lifting Appliance Operator and Forklift Driver, etc. License for Dangerous Chemical Warehouse Keeper, Electrician and Welder, etc.
工人上岗证，如电梯工、起重机械操作工及铲车司机等。危险化学品仓库管理员证，电工证及焊接工等。
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